3 cups all-purpose flour
2 teaspoons cream of tartar
1-1/2 teaspoons cornstarch
1 teaspoon baking soda
1/2 teaspoon ground cinnamon
1/2 teaspoon salt
1 cup unsalted butter, softened
2/3 cup packed brown sugar
1/3 cup sugar
1 large egg, room temperature
1 large egg yolk, room temperature
1 tablespoon buttermilk
1 teaspoon vanilla extract
STREUSEL TOPPING:
1/2 cup all-purpose flour
1/3 cup plus 3 tablespoons packed brown sugar, divided
1 teaspoon ground cinnamon
1/8 teaspoon salt
4 tablespoons unsalted butter, softened, cubed
2 to 3 medium peaches, thinly sliced
1In a large bowl, whisk flour, cream of tartar, cornstarch, baking soda, cinnamon and salt until combined; set aside.
2In the bowl of a stand mixer fitted with a paddle attachment, cream butter, brown sugar and sugar until light and fluffy, 2 to 3 minutes. Add whole egg and egg yolk; beat until fully incorporated. Stir in buttermilk and vanilla extract.
3With the mixer on low speed, slowly add dry ingredients, mixing until just incorporated and no dry patches of flour remain, being careful not to overmix. Cover; chill at least 1 hour.
4Meanwhile, in a shallow bowl, stir together flour, 1/3 cup brown sugar, cinnamon, salt and butter until the mixture resembles coarse, crumbly sand. Chill until ready to bake.
5Preheat oven to 375°. Line two baking sheets with parchment paper. Sprinkle 1/2 teaspoon of the reserved brown sugar onto the parchment paper; top with 3-4 peach slices. Repeat to make 12 mounds, 2-3 in. apart.
6Scoop dough by 1-1/2 tablespoonfuls; roll into balls. Gently press each dough ball into the prepared streusel topping; place on top of each mound of peaches, streusel-side up. Repeat.
7Bake until edges are golden and tops appear set, 11 to 13 minutes. Cool on pans 10 to 15 minutes before transferring to a wire rack to cool completely.
Total Time
Prep: 20 Min. Bake: 15 Min. + Cooling
Yield
12 Cookies
Soft and chewy peach upside-down cookies are crowned with a sweet streusel topping that conceals a peachy surprise on the bottom.
Nutrition Facts
1 cookie: 435 calories, 20g fat (12g saturated fat), 82mg cholesterol, 247mg sodium, 59g carbohydrate (30g sugars, 2g fiber), 5g protein.